DE2742887A1 - SPRAY DEVICE - Google Patents

Description

KRAUS & WEjSERT

PATENT LAWYERS ^ 7 4 2 8 8 7

DR WALTER KRAUS DIPLOMA CHEMIST DR-ING. ANNEKÄTE WEISERT DIPL-ING. Department of Chemistry IRMGARD ROAD 15 ■ D-8OOO MUNICH 71 · TELEPHONE 089 / 797077-797078 ■ TELEX 05-212156 kpatd

TELEGRAM CRAUS PATENT

OP-115 1645 JS / MY

TOYO AEROSOL INDUSTRY CO., LTD. Tokyo, Japan

Spray device

809886/0554

Description 2/42987

The invention relates to a piston-type spray device.

Conventional spray devices for dispensing the Contents in the spray state are divided into two types. Zm individual spray devices of the pump type have been used in which a piston by means of a hand or by means of a finger was operated to apply a pressing force to the contents, and by this pressing force, the contents became discharged or delivered in the spray state; and further aerosol type spray devices have been used in which a Hodidruckgas is filled into a pressure vessel, which with the content is loaded, and the content is sprayed out by the action of this high pressure gas.

In the former type of sprinkler, since high pressure gas is not used, there is no danger of explosion or the like, but it does happen depending on the intensity of the compressive force or the capacity of the piston changes the size of the particles being sprayed, or decreases the spray efficiency. In However, the latter type of aerosol type sprayers using a high pressure gas can overcome and eliminate the above disadvantage associated with the pump type sprayers they are still disadvantageous because often an explosion is caused by careless handling and because of the training a pressure vessel is expensive.

On the basis of this fact, various research work and investigations for improving the spray device of the pump type have been undertaken within the scope of the present invention, and on the basis of this work and investigations

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A novel pump-type spraying device was developed according to the invention, which has both the advantages of conventional spraying devices of the pump type as well as the conventional spraying devices of the aerosol type, namely a spray device in which the possibility of an explosion and other accidents occurring on a Minimum is reduced and with which a very high spray effectiveness or efficiency is achieved.

The present invention provides a spray device which has an airtight container which has not yet been used in any of the conventional spray devices, wherein the atmosphere in the airtight container is kept at a low pressure.

Furthermore, the invention provides a spray device which comprises such an airtight container, in which a low pressure gas is previously charged, so that the maintenance of a low pressure in the atmosphere inside the airtight container is facilitated.

In addition, a spray device is proposed with the invention, which such an airtight container in which a piston having a special structure is installed, and it becomes a good atomizing condition achieved by increasing the spray pressure by actuating the piston.

In addition, a spray device is provided with the invention, which such airtight Containers comprising a pressure receiving chamber and a pressure generating chamber successively in a housing which are built into the airtight container so that a good spraying condition is only achieved

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when the spray pressure is increased to a predetermined level by the piston actuation.

Finally, the present invention provides a spray device comprising such an airtight container having the aforementioned pressure receiving chamber and pressure generating chamber, both chambers are arranged or designed so that they have a special structure and the piston and a check valve with these chambers are combined so that the spray capacity is further improved or increased.

Finally, the invention proposes a spray device into which a volatile component can be poured and, as a result, the volatility can or easy vaporizability of the sprayed material noticeably compared to the volatility or easy vaporizability of the material as sprayed according to the conventional pump-type spraying devices is improved or increased be so that in this way a dry spray with a good drying property is achieved and the amount of Pressurized gas that must be used can be reduced considerably.

The above and other advantages and features of the invention will be explained below with reference to some, shown in FIG 4 to 4 of the drawing, particularly preferred exemplary embodiments shown in principle are explained in more detail; show it:

Flg. Fig. 1 is a front and side view, partly in section, of the sprayer showing the portion of the airtight container illustrated;

2 is an enlarged view showing longitudinal sections of main parts of the sprayer according to a first embodiment of the invention;

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3 is an enlarged view showing the longitudinal sections of main parts of the spray device according to a second embodiment of the invention; and

4 is an enlarged view showing longitudinal sections of main parts of the spray device according to a third embodiment of the invention shows.

The spray device according to the invention will now be explained in more detail. In the explanation below By the term "content" is meant the combination of a liquid, powder or other material that or which is ejected with a compressed gas, with the compressed gas meant, and with the designation "low pressure" or "Low pressure" means a pressure under which there is not a sufficient spray condition by means of the ejection pressure of the contents or the compressed gas can be achieved per se or by itself.

The exemplary embodiments shown in FIGS. 1 to 4 will now be explained in more detail, in these Figures the same parts have been given the same reference numerals.

Reference is first made to FIGS. 1 and 2, according to which a fastening cap 101 is airtight at the opening an airtight container 2, which is measured with a compressed gas of low pressure of up to 2 kg / cm at 35 ° C, and a material to be ejected or sprayed 1 is filled; and a housing 103 is on the inner Side of the fastening cap 101 fastened by a seal 102. Collapsible bellows parts 104 and 105 face one another facing or opposite openings 106 and 107 almost in the middle of the housing 103 in its longitudinal direction as well as opening flanges 108 and 109 »which are attached to an adjacent area 112 of an upper part 110 and an un-

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lower part 111 of the housing 103 are attached. A pressure receiving chamber 113 is formed in a bellows member 104 arranged in a lower position; and a pressure generating chamber 114, which has a diameter larger than that of the pressure receiving chamber 113, is in the other Bellows part 105 formed. The lower end face of a shaft 115 is at the upper end of the other bellows part 105 attached, and the shaft 115 penetrates the seal 102 and the fastening cap 101, and the end portion of the shaft 115 protrudes from the airtight container so that when an external compressive force is applied to the Shaft 115 is exerted, the pressure generating chamber 114 below Pressure is applied. A push button 116 is attached to the upper end of the shaft 115, and a nozzle 117 is on one Outer side surface of the push button 116 arranged or provided, and a channel 118, which with the nozzle 117 in connection is connected to a content-discharging port 119 of the shaft 115. A pressure receiving part 120 is provided so that that there is a closing part 122, which is formed by a seal 121, after which the contents expel To push opening 119 by the compressive force of a spring 123, so that the opening 119 is opened or closed. An insertion lever 125 'slidable in a channel 124 in The shaft 115 is inserted, is attached to a holding frame 127, which has an opening 126, which towards the inside the pressure generating chamber 114 is too exposed, and a check valve 128 that opens only when the Pressure in the pressure generating chamber 114 is decreased is attached to the support frame 127. A channel 130 for the content is formed in a fixed pipe 131, and this channel is connected to a valve seat 129 of the check valve 128 in connection; and this fixed pipe 131 is fixed to the lower wall 132 of the one bellows part 104. The channel 130 for the content is connected to the housing 103 by a

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hole 133 in connection. A dip tube 134 is provided so that it connects the housing 103 to the interior of the airtight container 2 and the contents into the housing 103 leads into it.

In the spray device having the above structure, when the push button 116 is depressed, the other bellows member 105 is deformed in the contraction direction, so that the pressure generating chamber 114 is pressurized will. At the same time, the pressure absorbing part 120, which is urged towards the content discharging opening 119 by the closing member 122 by the spring 123, by means of of the shaft 115 is subjected to pressure and forced or forcefully against the restoring force of the spring 123 downwards brought or moved. Furthermore, the one bellows part 104 is the pressure generating force of the pressure generating chamber 114 exposed, and it is pressurized through the fixed pipe or pipe 131, so that thereby the bellows member 104 is extended and brought or moved downward. Since the diameter of the pressure receiving chamber 113, which is constructed by the one bellows member 131 is smaller than the diameter of the pressure generating chamber 114, the Contraction force of the pressure generating chamber 114 caused by the depression or pressurization of the shaft 115 is caused by this difference in diameter, and the increased contraction force is applied to the Transfer pressure receiving chamber 113. If that difference the contraction pressure force exceeds the restoring force of the spring 123, then the pressure receiving member 120, whose lower end is attached to the one bellows part 104, by the stretching force of the one bellows part 104 downward of the pressure receiving chamber 113 so that there is the content discharging opening 119 of the shaft 115 opens. Accordingly, the content (the gas in the initial operation) that is in the pressure generating chamber 114 and the

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Pressure receiving chamber 113 is stored from the nozzle 117 of the push button 116 is atomized or sprayed out by means of the accumulated pressure force.

Since not only the material to be ejected but also a pressurized gas of a low pressure of up to 2 kg / cm _% measured at 35 ° C is filled as the content, in the above spraying process, the content is ejected by the ejecting force, which includes the above-mentioned pressurizing force and the pressures of the pressurized gas and the pressurized gas, respectively, and the material to be discharged is finely divided by the low pressure gas contained therein to improve the atomizing effect. As a result of this, an excellent spray or spray can be used. Atomizing effect can be achieved.

When the pressure generating force in the pressure generating chamber 114 is decreased by this spraying process, then, the restoring force of the spring 123 overcomes the pressure generating force, and the closing part 122 of the pressure receiving part 120 becomes the opening discharging the content 119 of the shaft 115 is pressed so that it stops the ejection of the contents. At the same time, the check valve 128 is closed because of the decrease in pressure in the pressure generating chamber 114 is opened, the content 1 is discharged from the airtight container 2 and through the dip tube 134, the connection hole 133 and the channel for the contents 130 and discharged from the valve seat 129 and the opening 126 into the pressure generating chamber 114 and the pressure receiving chamber 113 are introduced during this introduction and the aforementioned spraying operation the bellows parts 104 and 105 are shortened so that they generate vibrations. Accordingly, if powder or other particulate material has been selected as the material to be discharged, the powder or the like in the pressure receiving chamber 113 and ' the pressure generating chamber 114 is shaken, and as a result

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an undesirable phenomenon that would be that the powder or the like can be prevented from occurring. adhered to the bellows parts 104 and 105 or in the pressure receiving chamber 113 and the pressure generation ^ aininer 114 withheld will; such a phenomenon is effectively prevented, and on the contrary, the powder or the like can be used in good State of atomization are ejected. The airtight container is in the normal state except for the time in which the spraying process takes place, separated airtightly from its outside by the seal 102 and the bellows parts 104 and 105. As a result, leakage of the gas from the airtight container can be effectively prevented and can good atomization and spraying effects can be achieved until all of the contents are discharged.

Another embodiment of the spray device of the present invention is now referred to on Fig. 3 explained in more detail.

In the structure according to FIG. 3, a housing 135 is fastened to a fastening cap 101 by a seal 102, and the diameter of the portion of the housing 135 that is below the actual or approximate center in the longitudinal direction of the housing is reduced by a stepped part 136. A pressure receiving piston 137 is slidable mounted on this small diameter part, and a pressure receiving chamber 138 is in the pressure receiving piston 137 formed. A pressure generating chamber 139 having a diameter larger than that of the pressure receiving chamber 138 is formed in the housing 135, and a pressure generating piston 140 is slidable inside the pressure generating chamber 139 attached. An airtight piston 141 is integral with the pressure generating piston 14O provided so that it cooperates with this or acts simultaneously with this, and this piston 141 is in the

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airtight contact with the inner peripheral surface of the housing 125. One end of a shaft 142 is integral. integrally attached to the airtight piston 141, and the other end of the shaft 142 protrudes outward from the airtight container 2 and is connected to a Push button 116 is provided which has a nozzle 117 with an opening provided for ejecting the contents is in connection, as is the case in the previous embodiment shown in FIG. A pressure receiving part 143 has a closing part 122 which fits closely or tightly to the opening 119 provided for ejecting the contents is pressed, namely by a spring 123 »between the bottom wall 144 of the housing 135 and the pressure receiving piston 137 is inserted so that the opening 119 provided for ejecting the contents is freely opened and closed will; and this pressure receiving part 143 is fixed to a fixed pipe 131 and a fixed frame 145, respectively Fastened to tube 131, which is formed integrally with the pressure receiving piston 137. A Check valve 146 is provided in the fixed line 131 so that it is only opened when the pressure in the pressure generating chamber 139 is lowered, and this check valve 146 is through an opening 153 of the holding frame 145 ■ connected to the pressure generating chamber 139.

In the present embodiment having the above structure, the difference in pressure exceeds caused by the difference in diameter between the pressure generating chamber 139 and the pressure receiving chamber 138 acts when the push button 116 is depressed, as in the embodiment illustrated in Fig. 2, the restoring force of the spring 123 »so that the opening 119 of the shaft provided for ejecting the contents 142 will be opened and the contents will be ejected as a result.

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- ΊΛ -

Since by the pressure generating piston 14O and the airtight Piston 141 in the housing airtightness is maintained, there will be leakage of the gas from the airtight container prevented, and the contents can be discharged in a good atomized state in the form of fine particles until all of its contents are unloaded. In addition, this embodiment is special for ejection of liquid materials as the pressure generating chamber 139 is designed so that it has a smooth surface.

Another embodiment of the spray device according to the invention will now be described in greater detail with reference to FIG explained.

In the embodiment according to FIG. 4, it comprises an air collecting part 147 has an annular upper end flange 149 that fits between the upper ends of gasket 102 and the Housing 148 inserted and secured between these upper ends is. The air interception part 147 is made of a collapsible, airtight material, such as a bellows part, and the lower end of the air collecting part is between a pressure generating piston 150 slidably mounted on an inner peripheral surface of the housing 149 is, and a shaft 151 is inserted and fixed between this pressure generating piston and this shaft, so that a gasified gas or a gasified liquid that or the leakage flow from a pressure generating chamber 152 by the pressure generating piston 150 could form leakage to the outside of the airtight container is prevented. In this exemplary embodiment there is one Luftauf catching part 147 instead of the airtight piston like him in the embodiment of FIG. 3 is used, and by this arrangement areas in which

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Touching and rubbing caused when the push button 116 is depressed, decreased and decreased, whereby the printing and spraying process can be achieved by means of a weaker force. The other structural elements and their functions are substantially the same as those in the embodiment shown in FIG is.

The present embodiments, as illustrated in FIGS. 1 to 4, are characterized in that that an airtight container is used and that the atmosphere is kept in a state in which it is below is set at low pressure, and preferably a pressurized gas is kept at a low pressure is put into, along with a liquid, powder, or other material to be expelled filled the airtight container. Due to these characteristic features, various advantages can be achieved, in particular the advantages mentioned below.

(1) Since the risk of explosion is essentially eliminated, a pressure-resistant structure is unnecessary.

(2) Since the airtight container is employed, a volatile content can be filled, and the spray device can be used in the same way as an aerosol-type spray device and have a similar or similar device. A similar spray effect or condition or a similar or similar atomization state can be achieved.

(3) The spraying is due to the synergistic process of mechanical pressure generation of the piston and the Printing the content per se is achieved. Accordingly, the disadvantage encountered in the conventional spray devices

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Pump type results and which consists in that the atomization condition depending on the intensity of the compressive force exerted on the pump changes, can be turned off, and as a result, the content can be dispensed in a predetermined amount with a high atomizing effect can be sprayed, and a good spray state can always be obtained.

(4) The spraying process is supported by the mechanical pressure device, and the amount of pressurized gas that must be used can be considerably reduced.

Examples

Various materials to be expelled and pressurized gases as shown in Table I have been made filled in an airtight container as illustrated in FIG is. The inner capacity of the airtight container was 300 ecm, and 200 ecm of the contents (the material, that is to be sprayed, and the compressed gas) were filled. In each case there was a low pressure as shown in the table I can be seen, maintained in the airtight container, and the material could be sprayed with high atomization in a predetermined amount, and a good atomization state could be obtained.

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Table I.

By-type of spray game means

Dose material Compressed gas (wt.%) (Wt.

Pressure in the airtight container _ (kc / cm ² at 37.78 ⁰ C)

Hairspray

Hairspray

Hair condition

notification

tel

Hair treatment togetherness
composition

Cologne
water

Acrylic resin 3.0 polypeptide 0.5 alcohol 86.5 perfume suitable amount

PVP / VA
IPM
Ethyl alcohol

Silicone oil lanolin alcohol IPM
Ethyl alcohol

mineral oil

Lanolin alcohol

Isopentane

P.O.E. Lauryl-

alcohol ether

Ethyl alcohol

Ethyl alcohol perfume

Tetrafluorodichloroethane 10.0

10.0

10.0 10.0

10.0

2.0
2.0
86.0 Isobutane 1.0
3.0
1.0
75.0 Isobutane
Isopentane 25.0
2.0
30.0 Tetrafluo 3.0
30.0 87.0
3.0 Isobutane

1.2

1.7

1.9

2.1

10.0

1.7

N) CO OO

Table I (continued)

example
No.

Type of spray material to be ejected by means of (Weight 96)

Pressurized gas

Pressure in the airtight container. (kg / cm ² at 37.78 ⁰ C)

09
O
CO
OO
OO

Room deodorant

cleaning supplies

Antiperspirant

Lauryl methacrylate 5, O

Perfume 1.0

Ethyl alcohol 76.0

Propylene glycol 1.5

Triethylene glycol 1.5

P.O.E. Nonylphenol 2.0

Potassium pyrophosphate 6.0

Cellosolve 10.0

Isopropyl alcohol 4.0

distilled water 90.0

Rehydrol (ASC)
(Product of the Reheis

Chemical Co.) 3.0 Gafce RM-510
(Product of the General

Aniline Co.) 0.5

Ethyl alcohol 94.5

Isobutane

Isobutane

15.0

10.0

Carbon dioxide

2.0

2.3

1.8

1.6

K) OO OO

As can be seen from the above illustrations and explanations, in each of the previously described Embodiments illustrated in Figures 2-4 atomized sprayed particles much more finely than is the case in the conventional pump-type spraying devices, and the spraying efficiency and performance can be improved considerably, and was because a low pressure gas was filled in an airtight container together with a material to be discharged is. In addition, since the gas to be used is kept at a relatively low pressure, there may be a risk of Explosion can be kept to a minimum, and spraying and storage can be done with good security take place. In addition, since the airtight container, apart from the spraying operation, is hermetically sealed from its outside is prevented wasteful leakage of the gasified gas or liquid, and a Spraying of fine particles of the contents can be achieved in good condition until all of the contents are discharged.

The pump that can be used in the spray device of the present invention is not on is limited to the type of pumps specifically illustrated in the drawing, but any other pumps may also be used Pumps that are improved or designed in such a way that the airtightness can be maintained, can be used in the context of the present invention.

In the invention, for example, compressed gases of carbon dioxide and nitrogen oxide, solvents which have a boiling point below 50 ^° C., and liquefied gases can be used as the "low pressure gas".

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Briefly summarized, the invention relates to a pump-type spray device that includes an airtight container Has. When the atmosphere in this airtight container is maintained at a low pressure or a low pressure then you can not only take advantage of the spray devices according to the pump type, but also at the same time those of the aerosol type sprayer can be achieved. If a case, a piston and others Parts to be installed in the airtight container are arranged so that each of them has a specific structure, when the spray pressure is increased by the piston operation, a good spray state can be achieved can be effectively achieved at the point where the pressure is increased to a predetermined level.

End of description.

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Claims (6)

KRAUS & WEISERT PATENT Attorney E. DR WALTER KRAUS DIPLOMA CHEMIST DRING. ANNEKATE WEISERT DIPL-ING. SPECIALIZATION CHEMISTRY IRMGARDSTRASSE 15 ■ D-8OOO MUNICH 71 ■ TELEPHONE 089 / 797077-797078 · TELEX O5-212156 kpatd TELEGRAM CRAUS PATENT 1645 claims Spray device, characterized by an airtight container (2) which is arranged or designed so that when a pressure is exerted on a content by a piston (105, 115; 140; 150) by means of a pressure force of a finger, the content (1 is) sprayed from the airtight container to the outside, wherein a liquid or other material that will be ejected, and a pressurized gas as the content in the airtight container (2) are filled and the pressure in the airtight container at such a is kept low level that a sufficient spraying condition cannot be achieved by the discharge pressure of the content by itself or as such. 2. Spray device according to claim 1, characterized in that the pressure of the compressed gas on such is kept low level that no sufficient spray condition by the discharge pressure of the compressed gas for itself or as such can be achieved. 3. Spray device according to claim 1 or 2, characterized in that a housing (1O3; 135; 148) is formed in an airtight container (2); and that a pressure receiving chamber (113; 138) and a pressure generating chamber (114; 139; 152) are successively formed in the housing, the pressure generating chamber having a larger diameter than the pressure receiving chamber and being closed in the normal state from the outside of the airtight container, wherein the pressure chamber is arranged or designed so that the 809886/0554 Pressure can be applied to the pressure chamber by the compressive force of a shaft (115; 142; 145), this shaft from the Housing slidably protrudes to the outside of the airtight container; that a locking part (122) at one end a pressure receiving part (125) is formed, the latter being fixed in the pressure receiving chamber (113; 138) and in is able to move in the housing in cooperation with the pressure generating process of the pressure generating chamber, and furthermore, this closing member (122) is brought into contact with an opening (119) provided for ejecting the contents is, by means of the shaft by the compressive force of a spring (123), so that the closing part for the Can close and open the opening provided when discharging the contents; and that the one intended for the ejection of the content Opening (i19) with the inside of the airtight container (2) by a check valve (128; 146) which is only opened when the pressure in the pressure generating chamber is reduced is, and is connected by the closing part and the pressure receiving part. 4. Spray device according to claim 3, characterized in that the pressure receiving chamber (113; 138) and / or the Pressure generating chamber (114; 139; 142) consists of a collapsible bellows part or has such a bellows part. 5. Spray device according to one of claims 1 to 4, characterized in that a housing (103; 135; 148) in the airtight container (2) is formed; and that a pressure receiving chamber (113; 138) in which a pressure receiving piston (120; 143) is provided, and a pressure generating chamber (114; 139; 152) is sequentially formed in the housing are; wherein the pressure generating chamber has a larger diameter than the pressure receiving chamber and in the normal state by an airtight piston (141; 147) which is arranged in the pressure generating chamber, airtight from the outside 809886/0554 -3- 2742387 side of the airtight container is closed; and that the pressure generating chamber has a pressure generating piston (140; 150), which is slidably received therein and cooperates with the airtight piston and so arranged or is designed that by means of the compressive force of a shaft (115; 142; 151) which is displaceable to the outside of the airtight Container protrudes from the housing, pressure on the pressure generating chamber can be applied; wherein a locking part (122) is formed at one end of a pressure receiving part which is attached to the pressure receiving piston in the pressure receiving chamber and in cooperation in the housing is movable with the pressurizing operation of the pressurizing chamber, and in contact with one for discharging the contents provided opening (119) of the shaft can be brought, by the compressive force of a spring (123), so that the The closing part can close and open the opening provided for discharging the content; and that the opening (119) provided for the discharge through a check valve (128; 146), which is only opened when the pressure in the pressure generating chamber is decreased, as well as by the closing part (122) of the pressure receiving part with the interior of the airtight Container is connected. 6. Spray device according to one of claims 1 to 5, characterized in that a housing (103; 135; 148) in the airtight container (2) is formed; and that a pressure receiving chamber (113; 138) in which a pressure receiving piston (120; 143) is arranged, and a pressure generating chamber (114; 139; 152) in which a pressure generating piston (140; 150) slidably contained are formed in sequence in the housing; wherein the pressure generating chamber a has a larger diameter than the pressure receiving chamber and in the normal state by a collapsible, airtight Part that covers a pressure shaft in the housing, air- 809886/0554 sealed off from the outside of the airtight container (2) is, wherein the pressure generating chamber is arranged or formed that a pressure on the same by the Compressive force of the shaft (115; 142; 151) can be exerted, which is slidable from the housing to the outside of the airtight The container protrudes; wherein a closing part (122) formed at one end of a pressure receiving part, which is movable on the pressure receiving piston in the pressure receiving chamber and is in the housing in cooperation with the pressure generation process the pressure generating chamber can move, in contact with an opening provided for ejecting the contents (119) of the shaft can be brought by the compressive force of a spring (123), so that the closing part to eject the opening provided for the contents can close and open; and that the opening provided for ejecting the contents (119) through a check valve (128; 146), which is only opened when the pressure in the pressure generating chamber is reduced, and through the closing area (122) or the closing part of the pressure receiving part with the interior of the airtight container (2) is connected. 809886/0554